Perhaps you need to tell us a little more about what you want to achieve? Your quetion at the moment reads a little like "How do I use a graphics card amd monitor?". Mostly you deal with things on a much higer level. If you really need to work close to the wire you need to ask much more specific questions.
DWIM is Perl's answer to Gödel
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Want more info? How to link or
or How to display code and escape characters
are good places to start.